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朱喜平
1,郭存杰
2,付京晶
1,杜朝晖
1
(1.
中国石油天然气管道局秦皇岛输油
(气
)公司
,河北秦皇岛
066000;2.北京华油天然气有限责任公司
,北京
100000)
摘要
:针对长输天然气管道常用的管道球阀结构进行分析和研究
,从球阀的阀体､密封系统和注脂系统的结构入手
,在此基础上分析和总结了球阀下游自泄放和双活塞效应的工作原理和密封特点
,提出了天然气管道球阀在应用中应注意的
7个问题｡
关键词
:球阀
;结构特点
;密封机理
Structure Feature and Application of Ball Valve of Long-distance Gas Pipeline
Structure Fea ture and Applica tion of Ba ll Va lve of Long
2
distance Ga s Pipeline
ZHU Xi
2
p ing1 , GUO Cun
2
jie2 , FU J ing
2
jing1 ,DU Zhao
2
hui1
( 1. Qinhuangdao O il & Ga s Tran sporta tion Company of CPPLB, Qinhuangdao 066000, China; 2. Be ijing Huayou Ga s Corpora tion L im ited, Be ijing 100000, China)
Abstract:
It analyzes and studies the structure of ball valve widely used in gas p ipelines. On the base of the structure of ball body and sealing system and injection system are introduced and studied, the work p rincip le and sealing feature of self relief seats and double p iston effect are analyzed and summarized, and seven suggestions of app lication of p ipeline ball valves are put forward.
Key words:
ball valve; structure feature; sealingmechanism
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